Image courtesy of: aussiegal
Starting in 2006 reports surfaced of US honey bees colonies abruptly and mysteriously dying off without any clear cause.
A group of researchers believe they have found the cause of the honey bee colony collapse and it does not affect only honey bees.
In an article published today on Phy.org scientists believe they now have the answer to the cause of ‘colony collapse disorder’ in bees.
Neurotoxic pesticides are at fault for the world’s bee collapse and are also harming butterflies, worms, fish and birds, said a scientific review, which on Tuesday suggested for tighter regulation on the chemicals use.
A panel of 29 scientists from around the world reviewed two decades worth of reports on the topic and found “clear evidence of harm” from these pesticide types.
The two neurotoxic pesticides killing non-target species are neonicotinoids and fipronil.
There is enough evidence supporting the claim to trigger regulatory action.
The four-year assessment was carried out by The Task Force on Systemic Pesticides, which advises the International Union for Conservation of Nature, the world’s watchdog on species loss.
The two neurotoxic pesticides blamed are widely used insecticides whose effects vary and can be instant and lethal or chronic.
The study found that the pesticides are also absorbed by plants and hurting pollinating insects, butterflies, worms, fish and birds as the chemicals runoff into the soil and water.
Co-author of the report Jean-Marc Bonmatin entitled: Worldwide Integrated Assessment, stated that “the combination of their wide scale use and inherent properties of the neurotoxic pesticides has resulted in widespread contamination of agricultural soils, freshwater resources, wetlands, non-target vegetation, estuarine and coastal marine systems.”
The report, which is scheduled to be published in the journal: Environment Science and Pollution Research, looked at evidence of neonic damage gathered in 800 reports over the last twenty years.
A year ago scientist found neonicotinoids and organophosphates to cause a scrambling affect on the brain circuits of honeybees and while also weakening the memory and navigation skills that the bees rely on to find food resulting in entire hives to fail.
The findings are of grave concern.
The study reports that neonics can be 5,000-10,000 times more toxic than that DDT which is now banned in the US, and is the pesticide in which Rachel Carson wrote the book titled Silent Spring based on the detrimental effects of DDT on the environment and particularly birds.
The authors of the study have requested that regulatory agencies examine tighter regulations on neonicotinoids and fipronil and implement plans for a large scale global reduction of the chemicals use.
Researcher s believe they can use a biopesticide derived from the deadly poison of the Australian spider species in place of neonicotinoids and fipronil without harming bees.
Together, the two classes of pesticides are the most widely used insecticides and have a global market share of about 40 percent, said the authors, and global sales of more than $2.63 billion (1.9 billion euros) in 2011.